IP Library Granted Patent US 12,166,158
Granted Patent B2
US 12,166,158 · App. 17/526,501 · Granted Dec 10, 2024

Color conversion panel and display device including the same

Inventors: Jeong Ki Kim (Hwaseong-si, KR); Kang Soo Han (Seoul, KR); Jong-Hoon Kim (Seoul, KR); Hwa Yeul Oh (Hwaseong-si, KR); Hye Jun Woo (Asan-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
H01L33/502
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Quick Facts
Patent No.
US 12,166,158
App. No.
17/526,501
Granted
Dec 10, 2024
Kind
B2
Abstract

A color conversion panel includes light blocking members spaced apart from each other on a substrate; and a first color conversion layer, a second color conversion layer, and a transmission layer respectively disposed between the light blocking members, wherein the transmission layer includes first quantum dots, and the first quantum dots convert incident light into light having a wavelength in a range of about 480 nm to about 530 nm.

Claims (60)

1. A color conversion panel comprising:

light blocking members spaced apart from each other on a substrate; and

a first color conversion layer, a second color conversion layer, and a transmission layer respectively disposed between the light blocking members, wherein

the transmission layer includes first quantum dots,

the first quantum dots convert incident light into light having a wavelength in a range of about 480 nm to about 530 nm, and

a content of the first quantum dots is in a range of about 20 wt % to about 30 wt % of the transmission layer.

2. The color conversion panel of claim 1 , wherein

the second color conversion layer includes second quantum dots, and

the second quantum dots convert the incident light into light having a wavelength in a range of about 430 nm to about 680 nm.

3. The color conversion panel of claim 2 , wherein

the first color conversion layer includes third quantum dots, and

the third quantum dots convert the incident light into light having a wavelength in a range of about 600 nm to about 650 nm.

4. The color conversion panel of claim 3 , wherein

a content of the first quantum dots included in the transmission layer is less than a content of the second quantum dots included in the second color conversion layer and a content of the third quantum dots included in the first color conversion layer.

5. The color conversion panel of claim 3 , wherein

the first color conversion layer, the second color conversion layer, and the transmission layer further include a scattering member, respectively, and

a content of the scattering member included in the first color conversion layer and a content of the second color conversion layer is less than the content of the scattering member of the transmission layer.

6. The color conversion panel of claim 5 , wherein the scattering member includes TiO 2 .

7. The color conversion panel of claim 3 , wherein

a size of the first quantum dots is smaller than a size of the second quantum dots, and

the size of the second quantum dots is smaller than a size of the third quantum dots.

8. The color conversion panel of claim 1 , wherein

the transmission layer further includes TiO 2 , and

a content of the TiO 2 is in a range of about 5 wt % to about 6 wt % of the transmission layer.

9. The color conversion panel of claim 1 , further comprising:

a first color filter disposed between the substrate and the first color conversion layer;

a second color filter disposed between substrate and the second color conversion layer; and

a third color filter disposed between the substrate and the transmission layer.

10. The color conversion panel of claim 9 , further comprising:

a dummy color filter overlapping the light blocking members in a direction perpendicular to a surface of the substrate, the dummy color filter and the third color filter being disposed on a same layer, wherein

the third color filter and the dummy color filter are blue color filters.

11. The color conversion panel of claim 1 , further comprising:

a low refraction layer disposed between the first, second, and third color filters, and the first and second color conversion layers and the transmission layer.

12. The color conversion panel of claim 11 , further comprising:

a low refraction capping layer contacting the low refraction layer.

13. A display device comprising:

a color conversion panel; and

a display panel overlapping the color conversion panel, wherein

the display panel emits a blue light, and

the color conversion panel includes:

light blocking members spaced apart from each other on a substrate; and

a first color conversion layer, a second color conversion layer, and a transmission layer respectively disposed between the light blocking members,

the transmission layer includes first quantum dots,

the first quantum dots convert the blue light from the display panel into light having a wavelength in a range of about 480 nm to about 530 nm, and

a content of the first quantum dots is in a range of about 20 wt % to about 30 wt % of the transmission layer.

14. The display device of claim 13 , wherein

the second color conversion layer includes second quantum dots,

the second quantum dots convert the incident blue light into a light having a wavelength in a range of about 480 nm to about 560 nm,

the first color conversion layer includes third quantum dots, and

the third quantum dots convert the incident blue light into light having a wavelength in a range of about 600 nm to about 650 nm.

15. The display device of claim 14 , wherein a content of the first quantum dots included in the transmission layer is less than a content of the second quantum dots included in the second color conversion layer and a content of the third quantum dots included in the first color conversion layer.

16. The display device of claim 14 , wherein

the first color conversion layer, the second color conversion layer, and the transmission layer further include a scattering member, respectively, and

a content of the scattering member included in the first color conversion layer and a content of the second color conversion layer is less than a content of the scattering member of the transmission layer.

17. The display device of claim 14 , wherein

a size of the first quantum dots is smaller than a size of the second quantum dots, and

the size of the second quantum dots is smaller than a size of the third quantum dots.

18. The display device of claim 13 , wherein

the transmission layer further includes TiO 2 , and

a content of the TiO 2 is in a range of about 5 wt % to about 6 wt % of the transmission layer.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 15, 2021
From: KIM, JEONG KI; HAN, KANG SOO; KIM, JONG-HOON; OH, HWA YEUL; WOO, HYE JUN
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 058115/0544 →
Priority Claims (1)
KR 10-2021-0007571 · Jan 19, 2021 · national
Continuity (1)
Related Publication 20220231200A1 · Jul 21, 2022